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Radial Engine Starting Techniques

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Old November 7th 20, 08:02 AM posted to rec.aviation.piloting
Ken L
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Posts: 1
Default Radial Engine Starting Techniques

On Sunday, November 7, 1999 at 7:00:00 PM UTC+11, Jim Beasley Jr. wrote:
Why don't you buy the engine manuals? They will provide the best source of
Many motors are direct drive from the starter, and some use an inertial
starter. That is interchangeable (R1340). The old P-36 used a shotgun
shell to get it going.
Phillip Hopkins wrote in message
I originally posted this on rec.aviation.military, with surprisingly no

Among my colleagues, we have had much discussion about the methods used in
starting large radial engines - though none of us have any real knowledge

on the
subject. We have guessed that some very large engines use a flywheel

storage mechanism which is somehow coupled to the engine crankshaft at

time. The suggestion was also made of the use of gas cartridges which are

to operate an air motor which turns over the crankshaft, a la the movie

Phoenix" with Jimmy Stewart.


I wonder if someone, who is knowledgeable on the subject, could describe

methods used is cranking over large radial engines during starting, such

those on B-17s, B-29s, B-36s, even DC-3s. A brief history of radial

starting techniques from the 1920s to the 1950s would also be very

Thanks in advance.

Phillip Hopkins


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